#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x,y,bu=0;
	cin>>n>>x;
	int s=n;
	for(int i=1;i<=x;i++)
	{
	 cin>>y;
	 if(y<=s) s=s-y;
	 else bu++;
	}cout<<bu<<endl;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x,y,bu=0;
	cin>>n>>x;
	int s=n;
	for(int i=1;i<=x;i++)
	{
	 cin>>y;
	 if(y<=s) s=s-y;
	 else bu++;
	}cout<<bu<<endl;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x,y,bu=0;
	cin>>n>>x;
	for(int i=1;i<=x;i++)
	{
	 cin>>y;
	 if(y<=n) n=n-y;
	 else bu++;
	}cout<<bu<<endl;
	return 0;
}

#include<iostream>
using namespace std;
int main(){
    int m,n,b=0;
    cin>>m>>n;
    int a[n];
    for(int i=1;i<=n;i++){
        cin>>a[i];
        if(a[i]>m){
            b++;
        }else{
            m-=a[i];
        }
    }
    cout<<b;
    return 0; 
}

#include<bits/stdc++.h>
using namespace std;
int main(){
    int cnt = 0;
    int shengy,N,a;
    cin >> shengy >> N;
    for (int i = 0;i < N;i++){
    	cin >> a;
    	if (shengy < a) cnt++;//取不到药的病人+1
    	else shengy = shengy - a;//药=药-需要量
    }
	cout << cnt;
    return 0;
}